Bumping gaia.json for 2 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/f7f3ed70e94c
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #12633 from jmcanterafonseca/fix_sim_call

Bug 918582 - [B2G] [Buri] [Contacts] User sees no response when tapping ...

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https://hg.mozilla.org/integration/gaia-central/rev/af8cef7562cf
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 918582 - [B2G] [Buri] [Contacts] User sees no response when tapping contact phone number with no SIM in the device